沥青路面贫混凝土基层应力计算

为分析贫混凝土基层沥青路面新型路面结构的基层应力情况,通过有限元分析方法计算贫混凝土基层的荷载应力,并利用弹性层状体系理论分析沥青面层厚度对其影响,由此推导出基层荷载应力的计算公式.根据不同自然区划的温度场和最大温度梯度,得出贫混凝土基层沥青路面中的基层温度应力的有限元解,于此提出了基层温度应力的计算公式.上述两公式为贫混凝土基层沥青路面结构中基层厚度设计的重要依据.

Stress Calculation of Lean Concrete Base under Asphalt Pavement

In order to analyze the base stress of such a new type pavement whichasphalt surface goes upon lean concrete base,calculating the load stress without asphalt surface through FEM firstly,and then analyzing the effecting of asphalt surface's thickness based upon elasticity theory,and finally the formula of calculating load stress of lean concrete base with asphalt surface worked out according to the previous data.According to the different thermal fields and the maximum thermal gradient,the thermal stress of lean concrete base with asphalt surface can be calculated through FEM,and the formula of calculating thermal stress for lean concrete base with asphalt surface is also brought forward based on that.Both of above formulas are the key rules of designing the pavement of asphalt surface with lean concrete.